Sixteen networks need a Premium key, and Swell reaches end of support
Sixteen networks stopped answering keyless and Freemium calls on 31 August, 29 endpoints across mainnets and testnets. They need a Premium key from now on. Sui JSON-RPC moved off the keyless endpoint and stays free on Freemium. Swell reached end of support. No method limits, error codes or rate limits changed anywhere else.
An earlier version of this entry listed nine networks and put Fuel under end of support. Both were wrong: the list below is the full one, and Fuel stays available on Premium.
Deprecations and end-of-support
Premium key required
A keyless call to these now returns HTTP 403 with -32052, and a Freemium key returns the same. The code does not clear on retry, so a key with the right plan is the only fix.
| Network | Endpoints |
|---|---|
| 0G | mainnet EVM and BeaconKit REST, Galileo testnet EVM, BeaconKit REST and Tendermint |
| Atleta | mainnet, Olympia testnet |
| Avail | mainnet, Turing testnet |
| B2 Network | mainnet |
| Bitcoin | mainnet, Blockbook, signet, Blockbook signet |
| Bitlayer | mainnet |
| Fuel | mainnet, Sepolia testnet |
| Gravity | mainnet |
| Nervos CKB | mainnet |
| Rollux | mainnet |
| Sui | archive and GraphQL only, see below |
| Syscoin | mainnet |
| Tenet | mainnet |
| TON | API v2 |
| Xai | mainnet, testnet |
| zkSync Era | mainnet, Sepolia testnet |
Sign in, still free
Sui JSON-RPC, mainnet and testnet, left the keyless endpoint and stayed on Freemium, which is free. Sign in, create a project, and use the key it gives you. The Sui archive and GraphQL endpoints are the two that need Premium.
Swell
Swell reached end of support, mainnet and testnet. Swell Network shut the chain down, so this is not a plan change and Premium does not bring it back. We removed the API reference pages; inbound links resolve to the chain list instead of returning a 404.
Worth checking on your side
- A keyless endpoint that used to work is the thing to look for. If you copied an endpoint without a key from a chain page or from one of the per-chain sites, that is what returns 403 now.
-32052on a Freemium key means the network needs Premium. The same code on a keyless call means you need a key at all.- Nothing changed for the networks that stayed. Same rate limits, same batch size, same block range, and no method moved between plans.